H1 receptor

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H1 receptor

a type of histamine receptor on vascular smooth muscle cells through which histamine mediates vasodilation. See also histamine blocking agent.
References in periodicals archive ?
Intra-vermal cerebellar administration of chlorpheniramine, an H1-receptor antagonist, prior to histamine infusion, significantly reduced open-arm exploration compared with a group that was microinjected with histamine only, indicating possible involvement of this receptor in histamine-induced memory impairment in mice (20).
Efficacy and tolerability of once-daily 5mg desloratadine, and H1-receptor antagonist, in patients with seasonal allergic rhinitis: assessment during the spring and fall allergy seasons.
An orally active and selective H1-receptor antagonist currently prescribed in over 100 countries worldwide, Zyrtec shows significant antiallergic effects with a once-a-day dosage.